Monday, June 16, 2014
Gradient Elevation Mapping
Moscow Hills is a very pretty map of Moscow, using gradient colored roads to show elevation levels throughout the city. As well as using the color of the roads as a guide you can mouse-over any point on a road to view the elevation at that point.
The colors of the roads don't seem to be generated dynamically on the map. I think the colors are actually present in the map tiles. Theoretically you could create a similar map using the Google Maps API and the Elevation Service. In fact it should be fairly simple to draw a gradient polyline along a road using the Stroke Style feature with the Google Maps SDK for iOS.